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<title>[51561] trunk/tests/phpunit/includes: Build/Test Tools: Change the inheritance order of the abstract test classes.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/51561">51561</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/51561","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>SergeyBiryukov</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2021-08-06 00:44:00 +0000 (Fri, 06 Aug 2021)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Build/Test Tools: Change the inheritance order of the abstract test classes.

As things were, the inheritance order of the abstract test classes was as follows:
{{{
WP_UnitTestCase (PHPUnit adapter layer)
    extends WP_UnitTestCase_Base (base test class)
        extends PHPUnit\Framework\TestCase (PHPUnit native class)
}}}

Concrete (child) test classes, as well as more specific abstract TestCases, are/were expected to extend the `WP_UnitTestCase`.

This order is not optimal as it means that the `WP_UnitTestCase_Base` class would not be able to benefit from any polyfills and/or shims in the PHPUnit adapter layer.

With that in mind, this commit changes the inheritance to:
{{{
WP_UnitTestCase (empty class, left in place to not break BC for plugin/theme integration tests)
    extends WP_UnitTestCase_Base (base test class)
        extends PHPUnit_Adapter_TestCase (PHPUnit adapter layer)
            extends PHPUnit\Framework\TestCase (PHPUnit native class)
}}}

The new order allows for the `WP_UnitTestCase_Base` to also benefit from the PHPUnit adapter layer.

For backward compatibility reasons the `WP_UnitTestCase`, which all test classes are (were) expected to extend, is left in place, though it is now an empty class and explicitly `abstract`.

Follow-up to <a href="https://core.trac.wordpress.org/changeset/51559">[51559]</a>, <a href="https://core.trac.wordpress.org/changeset/51560">[51560]</a>.

Props jrf, hellofromTonya, johnbillion, netweb, SergeyBiryukov.
See <a href="https://core.trac.wordpress.org/ticket/46149">#46149</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunktestsphpunitincludesabstracttestcasephp">trunk/tests/phpunit/includes/abstract-testcase.php</a></li>
<li><a href="#trunktestsphpunitincludesbootstrapphp">trunk/tests/phpunit/includes/bootstrap.php</a></li>
<li><a href="#trunktestsphpunitincludestestcasephp">trunk/tests/phpunit/includes/testcase.php</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#trunktestsphpunitincludesphpunitadaptertestcasephp">trunk/tests/phpunit/includes/phpunit-adapter-testcase.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunktestsphpunitincludesabstracttestcasephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/includes/abstract-testcase.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/includes/abstract-testcase.php        2021-08-06 00:35:01 UTC (rev 51560)
+++ trunk/tests/phpunit/includes/abstract-testcase.php  2021-08-06 00:44:00 UTC (rev 51561)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -12,7 +12,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">  *
</span><span class="cx" style="display: block; padding: 0 10px">  * All WordPress unit tests should inherit from this class.
</span><span class="cx" style="display: block; padding: 0 10px">  */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-abstract class WP_UnitTestCase_Base extends PHPUnit\Framework\TestCase {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+abstract class WP_UnitTestCase_Base extends PHPUnit_Adapter_TestCase {
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        protected static $forced_tickets   = array();
</span><span class="cx" style="display: block; padding: 0 10px">        protected $expected_deprecated     = array();
</span></span></pre></div>
<a id="trunktestsphpunitincludesbootstrapphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/includes/bootstrap.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/includes/bootstrap.php        2021-08-06 00:35:01 UTC (rev 51560)
+++ trunk/tests/phpunit/includes/bootstrap.php  2021-08-06 00:44:00 UTC (rev 51561)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -207,6 +207,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> require_once $phpunit_polyfills_autoloader;
</span><span class="cx" style="display: block; padding: 0 10px"> unset( $phpunit_polyfills_autoloader );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+require __DIR__ . '/phpunit-adapter-testcase.php';
</ins><span class="cx" style="display: block; padding: 0 10px"> require __DIR__ . '/abstract-testcase.php';
</span><span class="cx" style="display: block; padding: 0 10px"> require __DIR__ . '/testcase.php';
</span><span class="cx" style="display: block; padding: 0 10px"> require __DIR__ . '/testcase-rest-api.php';
</span></span></pre></div>
<a id="trunktestsphpunitincludesphpunitadaptertestcasephp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: trunk/tests/phpunit/includes/phpunit-adapter-testcase.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/includes/phpunit-adapter-testcase.php                         (rev 0)
+++ trunk/tests/phpunit/includes/phpunit-adapter-testcase.php   2021-08-06 00:44:00 UTC (rev 51561)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,45 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+
+use Yoast\PHPUnitPolyfills\Helpers\AssertAttributeHelper;
+use Yoast\PHPUnitPolyfills\Polyfills\AssertClosedResource;
+use Yoast\PHPUnitPolyfills\Polyfills\AssertEqualsSpecializations;
+use Yoast\PHPUnitPolyfills\Polyfills\AssertFileDirectory;
+use Yoast\PHPUnitPolyfills\Polyfills\AssertFileEqualsSpecializations;
+use Yoast\PHPUnitPolyfills\Polyfills\AssertionRenames;
+use Yoast\PHPUnitPolyfills\Polyfills\AssertIsType;
+use Yoast\PHPUnitPolyfills\Polyfills\AssertNumericType;
+use Yoast\PHPUnitPolyfills\Polyfills\AssertObjectEquals;
+use Yoast\PHPUnitPolyfills\Polyfills\AssertStringContains;
+use Yoast\PHPUnitPolyfills\Polyfills\EqualToSpecializations;
+use Yoast\PHPUnitPolyfills\Polyfills\ExpectException;
+use Yoast\PHPUnitPolyfills\Polyfills\ExpectExceptionMessageMatches;
+use Yoast\PHPUnitPolyfills\Polyfills\ExpectExceptionObject;
+use Yoast\PHPUnitPolyfills\Polyfills\ExpectPHPException;
+
+/**
+ * PHPUnit adapter layer.
+ *
+ * This class enhances the PHPUnit native `TestCase` with polyfills
+ * for assertions and expectation methods added between PHPUnit 4.8 - 9.5.
+ *
+ * See {@link https://github.com/Yoast/PHPUnit-Polyfills} for full
+ * documentation on the available polyfills.
+ */
+abstract class PHPUnit_Adapter_TestCase extends PHPUnit\Framework\TestCase {
+
+       use AssertAttributeHelper;
+       use AssertClosedResource;
+       use AssertEqualsSpecializations;
+       use AssertFileDirectory;
+       use AssertFileEqualsSpecializations;
+       use AssertionRenames;
+       use AssertIsType;
+       use AssertNumericType;
+       use AssertObjectEquals;
+       use AssertStringContains;
+       use EqualToSpecializations;
+       use ExpectException;
+       use ExpectExceptionMessageMatches;
+       use ExpectExceptionObject;
+       use ExpectPHPException;
+}
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: trunk/tests/phpunit/includes/phpunit-adapter-testcase.php
</span><span class="cx" style="display: block; padding: 0 10px">___________________________________________________________________
</span></span></pre></div>
<a id="svneolstyle"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: svn:eol-style</h4></div>
<ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+native
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="trunktestsphpunitincludestestcasephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/includes/testcase.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/includes/testcase.php 2021-08-06 00:35:01 UTC (rev 51560)
+++ trunk/tests/phpunit/includes/testcase.php   2021-08-06 00:44:00 UTC (rev 51561)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1,48 +1,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> <?php
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-
-use Yoast\PHPUnitPolyfills\Helpers\AssertAttributeHelper;
-use Yoast\PHPUnitPolyfills\Polyfills\AssertClosedResource;
-use Yoast\PHPUnitPolyfills\Polyfills\AssertEqualsSpecializations;
-use Yoast\PHPUnitPolyfills\Polyfills\AssertFileDirectory;
-use Yoast\PHPUnitPolyfills\Polyfills\AssertFileEqualsSpecializations;
-use Yoast\PHPUnitPolyfills\Polyfills\AssertionRenames;
-use Yoast\PHPUnitPolyfills\Polyfills\AssertIsType;
-use Yoast\PHPUnitPolyfills\Polyfills\AssertNumericType;
-use Yoast\PHPUnitPolyfills\Polyfills\AssertObjectEquals;
-use Yoast\PHPUnitPolyfills\Polyfills\AssertStringContains;
-use Yoast\PHPUnitPolyfills\Polyfills\EqualToSpecializations;
-use Yoast\PHPUnitPolyfills\Polyfills\ExpectException;
-use Yoast\PHPUnitPolyfills\Polyfills\ExpectExceptionMessageMatches;
-use Yoast\PHPUnitPolyfills\Polyfills\ExpectExceptionObject;
-use Yoast\PHPUnitPolyfills\Polyfills\ExpectPHPException;
-
</del><span class="cx" style="display: block; padding: 0 10px"> /**
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- * Basic abstract test class with PHPUnit cross-version adapter layer.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * Basic abstract test class.
</ins><span class="cx" style="display: block; padding: 0 10px">  *
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- * This adapter layer polyfills all PHPUnit assertion and expectation
- * methods which were added between PHPUnit 4.8 - 9.5 to allow tests
- * to benefit from the full range of available PHPUnit methods.
- *
- * See {@link https://github.com/Yoast/PHPUnit-Polyfills} for full
- * documentation on the available polyfills.
- *
</del><span class="cx" style="display: block; padding: 0 10px">  * All WordPress unit tests should inherit from this class.
</span><span class="cx" style="display: block; padding: 0 10px">  */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-class WP_UnitTestCase extends WP_UnitTestCase_Base {
-
-       use AssertAttributeHelper;
-       use AssertClosedResource;
-       use AssertEqualsSpecializations;
-       use AssertFileDirectory;
-       use AssertFileEqualsSpecializations;
-       use AssertionRenames;
-       use AssertIsType;
-       use AssertNumericType;
-       use AssertObjectEquals;
-       use AssertStringContains;
-       use EqualToSpecializations;
-       use ExpectException;
-       use ExpectExceptionMessageMatches;
-       use ExpectExceptionObject;
-       use ExpectPHPException;
-}
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+abstract class WP_UnitTestCase extends WP_UnitTestCase_Base {}
</ins></span></pre>
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